Chlorine-gas control for flour bleaching



Ndv. 17, 1925-. I w. STEIN CHLORINE GAS CONTROL FOR FLOUR BLEACHING Filed'sgpt. 22. 1924 Patented Nov. 1 7, 19 p I UNI'IZIEDI STATES WILLIAM STEIN, OF

- PATENT OFFICE,

s'r. LOUIS, MISSOURI.

. GHLORINE-GAS common r03 FLOUR BLEACHINQ,

Application filedseptember 22, 1924. Serial No. 739,287.

Toall whom 'it may 00 ncern:

Be it known that 1, WILLIAM STEIN, a citizen of the United States,.residing at St. Louis, State. of Missouri, have invented acertain new and-useful Improvement in a- Chlorine-Gas Control for Flour Bleaching,

of which the following is a specification.

This invention relates to improvements in a chlorine gas control for flour bleaching,

.and has for its object an arrangement of transparent containers arranged and snit-' ably connected through which the chlorine gas-is directed, thoroughly filtered and all particles of moisture extracted before the gas is admitted into the agitator or flour tumbling container.

Another object-of my invention is to contion showing struct a perfectly sealed indicator containing a'given body of water through'which the chlorine gas is directed, this gas is then directed to a separator member likewise per-- fectly sealed, in this separatormember any particles of moisturefcarried by the gas are] separated and permitted to lodge in the bottom, from which said. condensation may be conveniently drained.

By my. improved means, thecorrect amountof gas to be used can be readily ob-.

served, and theseparating element removes all particles of moisture, thus delivering in-' to the agitator a perfect dry bleaching gas.-

Figure 1, is a sectional view ofmy inventhe gas supply tank in elevation.

Figure 2, for duplicate use.

Figure 3, is a horizontal sectional view of the indicator takenon the. line "3 -3 of Figure 1, and Figure 4, is a-front elevation of the indicator showing the graduations formed on the outer surface.

In the general arrangement of my inven-' tion, I provide a separator member, 4, consisting preferably of a suitable elongated tubular body 5, preferably of a strong quality I of glass, the upper closure or closed endterleakage or gas escape.

minating in aniintegral nipple 6, and a downwardly extending integral open bottom tube 7, this tube extending in the tubular body 5 slightly below midway of'its length or lower if desired, this tube being formed integral prevents joints and any posslble The bottom end of the body 5, terminates in a stopper opening 8, the inner surface -there.0f being suitably ground for the recepis a sideelevation of my system tion. of a similarlyground hollow stopper 9, equipped with'afinger piece, 10, for manipulation. This stopper is so constructed as to make a perfectly-tight and leakproof-connectionfwhen'inserted in the mouth or opening, 8, and by this means, any and all condensation removed from the traveling gas iscollected and removed when found-convenient and necessary. I v.

on one sideof the filter is also formed an integral nifpple, 1-1,'over which is placed a tube, 12, 0 any. durable'material, the opposite end'of this tube is connected to a nipple 13, formed integral 'with the indicator, consisting of a tubular body member, 14, of transparent material, its bottom being closed and its upper end open as indicated byv the 1 numeral 15, the inner suirfaceof said opening is suitably ground for the reception 0 the closure, cap or stopper, 16, whose contacting surface is correspondingly ground This element, 16, is rovided with an integraI nipple, "17, an an integral downwardly extending tube, 18, its lower end closed and the side walls provided at suit able intervals with perforations, 19, through which the gas is permitted to be directed through the body .of water or liquid, 20,and:

the nipple, 13, into for "effecting a tight and leakproof connectube, 18, and the number of perforations, 19,

through which the ga s percolates into the body of water in the indicator outside of the tube.- The water level inthe indicator is always above the uppermost perforations,

19, in the 'tube, 18, so that all gas must pass through the water before entering the separating member. j

directed by a tube, 25, attached to thenippie, 6, to the necessary agitator or flour tumbling machine not illustrated in the drawing. p

Referring to Figure 2, I show a side-elevation of my system, but in this instance I From the separating member the gas is v show the indicator with two nipples, 13, lo- .1 cated on opposite sides, by this arrangement 1 I may use and connect up to theindicator if found desirable, Ima'y equip the in ica-' two separating members and direct the gas to-two agitators from the same supply 1 and,

tor with any number of outlets for'supplying a pluralityof agitators, and the dotted lines shown in Figure 2 merely represent a frameby' which the tubes are supported in positiont SinceI am a practical miller, andnowin charge of the operation of a very large flour, mill, I have-operated a number of bleaching devices, but none have been as successful as the structure;shown for the reason that I all of the apparatus and appliances are 'equipped'with valves which soon becomev eaten up. by the gas, thus there isi'an escape of chlorine gas which is dangerous and very unsatisfactory, again'there is no visible arjoints are madeleakproof by a ground con rangement by which the rate 10f sion can be observed. 7 h

By my arrangement, all of the elements areconstructed of transparent material, 110 valves to become out of order, and the trans parent tubes and nipples are integral with the proper section.- The only two joints in: the apparatus are at the stopper, 9, of the filter and the top of the indicator, and'these gas admisnection'.

The circulation of thegas through the j apparatus is illustrated by the arrows in Figure 1, and alsothe circulation j of the f double structure by the arrows in Figure. 2.

By my arrangement Iv deliver into the agitator, and direct against the "agitated flour, a properly regulated volume of purely at will;

On the tubular member or body of the indicator I provide graduations which are in; alignment with the perforations19-of the tube andthey are arranged from 3 ounces -and up, and increasing by threes, the first perforation meaning that 3 ounces of gas is pends upon the capacity what I claim is: v I

1. A chlorine gas control forflour bleachbeing admitted, the second perforation showing that 6 ounces of gas is admitted and so on increasing by threes. This will be in clear view to the operator at all times, andthe-amount of gas to be admitted deand quantity of flour to be bleached.

Having fully described my invention,

ing comprising an independent transparent graduated tubularindicator having an open top and containing a volume of liquid through the the gas isdirected, a detachable stopper closing said opentop, a -perfo- .ratedtube forming a part of the. stopper and 'extending into the indicator, an inde pendent transparent tubular "separating member through which thegas from the indicator must pass, and. be purified 'from' moisture before admitted to theagitator, said indicator and separating fmember connected together by a separate pliable tube.

2. A: device of the class described comprising a graduated tubular indicator member provided with an inlet and an outlet,

a separating member having an inlet and outlet, indicator and filter being conveniently connected together by 'aseparate tube, the indicator having its top and gas member having an outlet tube formed inteinlettube formed integral, the separating gral therewith, and a leakproof stopper formed in the vbottom of the separating member.

3. A device of the character described c'omprisingan indicator, and a separating member preferably located side by side connected together, in combination with a'chlorine gas tank for supplying gas to the indicator, the indicator consisting of an ,outer transparent tubular body portion, with -an integral nipple formed'on its side to which may be attached a separate tube, and a detachable closure having an integral transparent perforated tube extending into the body portion, the separating member comprising a transparent tubular body portion its upper end closed and provided with an integral transparent tube extending downwardly into the body portion, an integral nipple formed on its side for tubular con} nection to the indicator, and a stopper located at its bottom having a leakproof connection.

In witness whereof I hereunto set my hand.

, WILLIAM STEIN. 

